{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3e4970a2a6d8960d5c0f77a7ff27ebc56d8b5a6cc5cf10508df6a7d12d4a684",
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    "signer": "0xD66a4788123f32067AEf829a0b5C5b88a9E7ed4F",
    "userId": "762812180"
  }
}